Discussions By Condition: I cannot get a diagnosis.

Talking Teacher...

My tongue is swollen and extremely sore (like I've been chewing on it). Additionally, I started having excess saliva. Yesterday I developed a sore on top of my bottom lip. All of which makes teaching speech ever so much "interesting". It hurts! Went to an MD yesterday. He had no diagn., but wrote script for lidocane to pain. It works for about 45 min. What's going on? I'm generally healthy, but work in a petri dish with special needs children. WHAT CAN I DO/SEE??? q-u-i-c-k???